Isner's been figured out. He basically has to hit 4 unreturnables in a service game to even feel safe about it now his opponents protect (not that it is that hard given how poorly Isner returns) their serves well and capitalize on their return chances.
I thought he would take the momentum from Indian Wells and Dabis Cup last year and actually do something, but he's become yet another sevebot.
And the courts faster, pacier this year? You must have been watching ice hockey or something. Courts are the same, and it isn't like a faster, bouncier court (like the USO, where he was beaten by Kohlschreiber) benefits him that much.